Both are globe-style automatic litter boxes under $500. Both have smart apps, weight-based cat tracking, and active odor control. On paper they’re the most direct competitors in the market right now. I’ve spent time with both and the differences are real — just not where the spec sheets suggest.
The Quick Version
Leo’s Loo Too: better app, active deodorizer spray, slightly smaller globe entry. Como Litter T20 Pro: wider globe entry, slightly simpler app, competitive pricing when on sale. Both clean well. Neither has the Litter-Robot 4’s waste drawer capacity. For one to two cats, both are solid choices — the decision usually comes down to current price and which app you prefer.
Side-by-Side
| Feature | Leo’s Loo Too | Como Litter T20 Pro |
|---|---|---|
| Price | ~$420 | ~$300–$400 |
| Globe entry | ~9 in | ~9.5 in |
| Weight limit | ~25 lbs | ~25 lbs |
| Odor control | ⭐ Active spray + carbon | Carbon filter + deodorizer port |
| App quality | ⭐ Excellent | Good |
| Per-cat tracking | ✅ Yes | ✅ Yes |
| Liner bag system | ❌ Direct dump | ❌ Direct dump |
| Monthly consumables | Deodorizer ~$12/mo | Deodorizer tablets ~$8/mo |
| Brand support | PETKIT (improving) | Como Litter (newer) |
| Best for | App-focused users, 1–2 cats | Budget-conscious, larger cats |
Cleaning: Too Close to Call
Both rotate on a timer after your cat exits. Both sift clumps cleanly into a waste drawer. Both handle clumping clay litter well. I couldn’t identify a meaningful difference in day-to-day cleaning quality between them. If you’re choosing based on how clean the litter stays — flip a coin. This isn’t where the decision lives.
Odor Control: Leo’s Loo Too Edges It
The Leo’s Loo Too’s automatic deodorizer spray — which fires after each cycle — gives it a practical edge. You notice it working. The Como Litter T20 Pro has a deodorizer port and carbon filter which work fine passively, but there’s no auto-spray. In a smaller room the Leo’s Loo Too’s active odor management is the better experience.
Both have ongoing consumable costs — the Leo’s Loo Too’s cartridges run about $12/month, Como Litter’s tablets are slightly cheaper at around $8/month. Neither is expensive but worth knowing.
App: Leo’s Loo Too Wins Clearly
The PETKIT app is better. More features, more reliable notifications, cleaner interface, more frequent updates. The Como Litter app does the basics — usage logs, manual cycle triggers, alerts — but feels a step behind PETKIT in polish and reliability. If you’re someone who actually uses the app features regularly, this difference is noticeable.
The weight-based cat ID works similarly on both — accurate when cats have meaningfully different weights, confused by cats within a pound of each other.
Globe Size: Como Litter Wins for Large Cats
The half-inch difference in globe opening (9 in vs 9.5 in) matters if you have a large cat over 15 lbs. Miso at 13 lbs uses both without issue, but I’ve seen reports of bigger cats finding the Leo’s Loo Too’s opening slightly tight. If you have a large Maine Coon or big Ragdoll, the Como Litter T20 Pro’s wider opening is worth noting.
Price: Como Litter Wins When on Sale
The Como Litter T20 Pro regularly drops below $350 on sale. At that price versus the Leo’s Loo Too at $420, the gap widens enough to change the calculation. Under $350: Como Litter is compelling value. Above $380: the Leo’s Loo Too’s app and odor control advantages are worth the small premium.
Check the current price on both before deciding — this market moves.
Who Should Buy Which
Buy the Leo’s Loo Too if: app quality matters to you, you want the best active odor control, or both boxes are similarly priced at the time you’re buying.
Buy the Como Litter T20 Pro if: you have a large cat (15+ lbs) and want the wider opening, or the T20 Pro is meaningfully cheaper — say $70+ less — at the time you’re shopping.
Verdict
Leo’s Loo Too is the better box at equivalent prices. Better app, better active odor control, more established brand. But the Como Litter T20 Pro is a legitimate competitor that punches above its price when on sale — and the wider globe opening genuinely matters for larger cats. Check both prices before committing.
